Mitsubishi Electric DLP EX320U User manual

1
DLP Projector
EX320U/EW330U/EX320U-ST/EX321U-ST/EW331U-ST
Controlling the projector using a personal computer
This projector can be controll ed by connecting a pe rsonal computer with RS-232C terminal.
PC-controllable functions:
•Turning the power ON or OFF
•Changing input signals
•Inputting commands by pressing the buttons on the control panel and remote control
•Menu setting
Connection
Important:
•Connect the computer with the projector on a one-to-one basis.
•Make sure that your computer and projector are turned o before connection.
•Boot up the computer rst, and then plug the power cord of the projector.
(If you do not follow this instruction, the Com port may not function.)
•Adapters may be necessary depending on the PC connected to this projector. Contact your dealer for details.
1. Interface
1.1 Pin assignment of SERIAL terminal (D-SUB 9-pin)
1.2 Communications format
This projector uses RXD, TXD and GND lines for RS-232C control.
PROTOCOL RS-232C
BAUD RATE 9600 [bps]
DATA LENGTH 8 [bits]
PARITY BIT NONE
STOP BIT 1 [bit]
FLOW CONTROL NONE
SERIAL
D-SUB 9-pin D-SUB 9-pin
RS-232C cable
RS-232C
terminal
Pin Description Pin Description
1
NC 2 RXD
4
NC
6
NC
8
CTS
3
TXD
5
GND
7
RTS
9
NC
12
3 4 5
6 7 8 9

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2. Control command configuration
The command consists of the address code, function code, data code, ACK/NAK, and end code. The length of the com-
mand varies among the functions.
[Address code] Fixed to 00. (‘30h’ ‘30h’ in the ASCII code)
[Function code] Code unique to each control operation.
[Data code] Data (value) unique to each control operation (Not always indicated.)
[ACK/NAK] Code indicating the NAK return as described below
Fixed to :N (‘3Ah’ ‘3Eh’ in the ASCII code. Not added to ACK.)
[End code] Fixed to .(‘0Dh’ in the ASCII code)
3. Control sequence
•NAK return
In the following cases, the projector returns the command with “:N” added.
(1) Though the command sent from the computer is received by the projector successfully, it cannot be executed
because the projector is in the operation prohibition state.
(2) The data length of the sent command is incorrect or the command is invalid.
•When a command is sent out during the following operations, it may not be executed.
(1) During signal switching
(2) In the process of the auto position
(3) After the power is turned on.
The projector receives no commands for about 20 seconds (or for 2 minutes at the longest if the lamp does not
light up promptly as the life is expiring). In this case, the projector returns the received command with NAK
added.
•The return command is sent out within 1 second at the latest.
•When sending commands successively, wait to receive the return command of the current command before sending
a next command.
•The projector may not receive a command when the splash screen is being displayed immediately after turning on
the power.
•While using the LAN terminals, the LAN functions take precedence.
Address codeFunction code Data code ACK/NAK End code
ASCII ‘30h’ ‘30h’ Function Data ‘3Ah’ ‘4Eh’ ‘0Dh’
Character 00 Function Data :N
etoNecneuqeSrotcejorPretupmoC
1Send the command from the personal computer
to the projector.
2
The projector will send a return command after it
receives an end code.
If the projector does not receive commands
normally, that is, if the projector is not connected
physically or unable to receive commands, it
does not send out a return command.
The projector sends out a return command within
one second at the latest.
When the received command cannot be
executed, NAK is returned (as described below).
3
The personal computer checks the command
and confirms if the sent command has been
received or not.
4
Use the check command to see if the projector
has executed the command.
This projector sends various codes other than
the return code. When having a control
sequence by RS-232C, reject other codes from
the personal computer.
1
2
3
4

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[Example 1] Turning ON the power. (Values enclosed in quotation marks are ASCII codes.):
[Example 2] Selecting VIDEO as the input signal during auto positioning (Values enclosed in quotation marks are
ASCII codes.):
•The flowchart on the next page shows the recommended operating sequence for your reference to create a pro-
gram.
Command sent from the PC Status code returned
from the projector Description
‘30’ ‘30’ ‘21’ ‘0D’
00!
Command for POWER ON
‘30’ ‘30’ ‘21’ ‘0D’
00!
Command receipt confirmation (Command
echo back)
Command sent from the PC Status code returned
from the projector Description
‘30’ ‘30’ ‘5F’ ‘76’ ‘31’
00_v1
(During auto positioning)
Command for selecting VIDEO as the
input signal is sent out.
‘30’ ‘30’ ‘5F’ ‘76’ ‘31’ ‘3A’ ‘4E’
00_v1:N
The command is received by the projector
but cannot be executed. (NAK return)

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[RS-232C control flowchart]
Sending out command
OK
NG
END
NAK returned
Command sending fails.
No NAK returned
START
Command is sent successfully.
Command is executed successfully.
Awaiting response
from projector
Command is sent successfully.
Command execution fails.
No response for
1 second or longer
Checking execution of
command (sending out
check command)
Check the following.
• Check that the function code is correct.
• Check that the data code is correct.
• Check that the projector is able to issue
the return command.
Note: In the following cases, NAK is
returned even when the projector is
in normal condition.
• Immediately after the power is
turned on (about 20 seconds to 2
minutes)
• During input switching
• During auto positioning
• During password lock
Check the following.
• Check that the command begins with
“00”.
• The projector is not supplied with AC
power.
Check that AC power cord is
connected.
Turn on the power. (Turn on the circuit
breaker or main switch.)
• Not connected with the projector.
Check that the RS-232C cable is
connected.
Check the RS-232C cable for electrical
discontinuity.

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4. Command list
4.1 Operation commands
The operation commands are used for the basic operation setting of this projector. They may not be executed
while the signals are changed. The operation commands have no data codes.
[Example] When setting the input signal to COMPUTER 1. (Values enclosed in quotation marks are ASCII
codes.):
4.2 Reading command diagram
The projectors operating status, such as POWER-ON/OFF and the currently selected input terminal, etc. can be
monitored. Input terminal is not available during no signal.
Use the following commands to obtain the values of the lamp time.
“hhhh” and “mm” represent hours and minutes respectively.
ITEM Function Note
Character ASCII
POWER ON ! 21h This command is invalid during cooling after the power is turned off.
POWER OFF " 22h
This command is invalid during splash screen displaying after the power is turned on.
INPUT COMPUTER 1 _r1 5Fh 72h 31h This command will not be executed in Stand-by mode.
INPUT COMPUTER 2 _r2 5Fh 72h 32h This command will not be executed in Stand-by mode.
INPUT VIDEO _v1 5Fh 76h 31h This command will not be executed in Stand-by mode.
INPUT S-VIDEO _v2 5Fh 76h 32h This command will not be executed in Stand-by mode.
INPUT HDMI_d15Fh 64h 31h This command will not be executed in Stand-by mode.
Command sent from the PC, etc. Status code returned
from the projector Description
‘30’ ‘30’ ‘5F’ ‘72’ ‘31’ ‘0D’
00_r1
Command for setting the input signal to
COMPUTER 1
‘30’ ‘30’ ‘5F’ ‘72’ ‘31’ ‘0D’
00_r1
Command receipt confirmation
(Command echo back)
ITEM IICSAretcarahC
Function Data (Receive) Function Data (Receive)
h13h05h671PvNOREWOP
h03h05h67
72h 31hh94h67
72h 32hh94h67
0
r1
Pv
Iv
r2Iv
FFOREWOP
INPUT COMPUTER 1
INPUT COMPUTER 2
h13h67h94h671vIvOEDIVTUPNI
h23h67h94h672vIvOEDIV-STUPNI
h13h46h94h671dIvIMDHTUPNI
ITEM Function Data (Receive)
Character ASCII
LAMP TIME (LOW) vLE 76h 4Ch 45 hhhhhmm
Use the following commands to obtain other information.
The PC sends the command without attaching the data code to it. On the other hand, the projector attaches to
the received command its current operating status as the data code and send it back to the PC.
[Example] When checking the currently selected input terminal (when the INPUT VIDEO is being selected).
(Values enclosed in quotation marks are ASCII codes.):
ITEM Function Data (Receive)
Character ASCII
VOLUME VL 56h 4Ch 00-10
Command sent from the PC, etc. Status code returned
from the projector Description
‘30’ ‘30’ ‘76’ ‘49’ ‘0D’
00vl
Command for checking the input
terminal
‘30’ ‘30’ ‘76’ ‘49’ ‘76’ ‘31’ ‘0D’
00vlv1
Check result (VIDEO)

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4.3 Remote commands (Not executable in stand-by mode.)
The remote commands allow the computer to control the projector in the same way as by the remote control.
(Some operations cannot be controlled.) The remote commands have no data codes.
Button’s name on remote Function
Character ASCII
+/VOLUME r06 72h 30h 36h
-/VOLUME r07 72h 30h 37h
r53 72h 35h 33h
r2b 72h 32h 62h
←r4f 72h 34h 66h
→r59 72h 35h 39h
h43h53h2745rUNEM
h03h13h2701rRETNE
AUTO POSITION r09 72h 30h 39h
h43h16h274arEZEERF
[Example] When displaying the MENU selection bar. (Values enclosed in quotation marks are ASCII codes.):
4.4 Function commands (Not executable in stand-by mode.)
The mute commands are used for the mute setting of this projector with the 0 (HEX: 30h) and 1 (HEX: 31h).
4.5 Menu setting commands (Not executable in stand-by mode. Possible only to read during muting.)
The menu setting commands are used for the menu setting of this projector. If the personal computer sends the
command without attaching the data code, the projector attaches to the received command its current setting
value as the data code and send it back to the PC.
Command sent from the PC, etc. Status code returned
from the projector Description
‘30’ ‘30’ ‘72’ ‘35’ ‘34’ ‘0D’
00r54
Command operating the same as the
MENU button
‘30’ ‘30’ ‘72’ ‘35’ ‘34’ ‘0D’
00r54
Command receipt confirmation
(Command echo back)
ITEM Function Data
AV MUTE MUTE 4Dh 55h 54h 45h 0 (OFF), 1 (ON)
ITEM Function Data
Character ASCII
Character ASCII
PICTURE SETTING CE 43h 45h
0 (BRIGHTEST), 1 (PRESENTATION), 2 (NORMAL),
3 (THEATER), 4 (USER1), 5 (USER2)
CONTRAST PP 50h 50h ±50
BRIGHTNESS QQ 51h 51h 000 -100
LAMP MODE LM 4Ch 4Dh 0 (STANDARD), 1 (LOW)
ASPECT SC 53h 43h
0 (auto), 1 (real), 2 (4:3), 3 (16:9) (EX320U/EX320U-ST)
0 (auto), 1 (real), 2 (full), 3 (4:3), 4 (16:9) (EW330U)
• Some commands are not executed depending on the input signal. The operational restrictions same as those
on the menu setting are applied. Refer to “Menu operation” in the User Manual for more details.
How to set the value
Use the character or ASCII code as shown below to set the value.
[Example] When setting the CONTRAST to +17. (Values enclosed in quotation marks are ASCII codes.):
Character + - 0 1 2 3 4 5 6 7 8 9
ASCII ‘2Bh’ ‘2Dh’ ‘30h’ ‘31h’ ‘32h’ ‘33h’ ‘34h’ ‘35h’ ‘36h’ ‘37h’ ‘38h’ ‘39h’
Command sent from the PC, etc. Status code returned
from the projector Description
‘30’ ‘30’ ‘51’ ‘51’ ‘2B’ ‘31’ ‘37’ ‘0D’
00PP+17
Command for setting the
CONTRAST to +17
‘30’ ‘30’ ‘51’ ‘51’ ‘2B’ ‘31’ ‘37’ ‘0D’
00PP+17
Command receipt confirmation
(Command echo back)